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feat(pubsublite): add sample to create a Pub/Sub Lite export subscrip…
…tion (#2742) * feat(pubsublite): add sample to create a Pub/Sub Lite export subscription * Add seek target * Update pubsublite version * Update go.mod and go.sum
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| // Copyright 2022 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package admin | ||
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| // [START pubsublite_create_pubsub_export_subscription] | ||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
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| "cloud.google.com/go/pubsublite" | ||
| ) | ||
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| func createPubsubExportSubscription(w io.Writer, projectID, region, location, topicID, subID, pubsubTopicID string) error { | ||
| // projectID := "my-project-id" | ||
| // region := "us-central1" | ||
| // NOTE: location can be either a region ("us-central1") or a zone ("us-central1-a") | ||
| // For a list of valid locations, see https://cloud.google.com/pubsub/lite/docs/locations. | ||
| // location := "us-central1" | ||
| // NOTE: topic and subscription must be in the same region/zone (e.g. "us-central1-a") | ||
| // topicID := "my-topic" | ||
| // subID := "my-subscription" | ||
| // pubsubTopicID := "destination-topic-id" | ||
| ctx := context.Background() | ||
| client, err := pubsublite.NewAdminClient(ctx, region) | ||
| if err != nil { | ||
| return fmt.Errorf("pubsublite.NewAdminClient: %v", err) | ||
| } | ||
| defer client.Close() | ||
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| // Initialize the subscription to the oldest retained messages for each | ||
| // partition. | ||
| targetLocation := pubsublite.AtTargetLocation(pubsublite.Beginning) | ||
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| sub, err := client.CreateSubscription(ctx, pubsublite.SubscriptionConfig{ | ||
| Name: fmt.Sprintf("projects/%s/locations/%s/subscriptions/%s", projectID, location, subID), | ||
| Topic: fmt.Sprintf("projects/%s/locations/%s/topics/%s", projectID, location, topicID), | ||
| DeliveryRequirement: pubsublite.DeliverImmediately, // Can also be DeliverAfterStored. | ||
| // Configures an export subscription that writes messages to a Pub/Sub topic. | ||
| ExportConfig: &pubsublite.ExportConfig{ | ||
| DesiredState: pubsublite.ExportActive, // Can also be ExportPaused. | ||
| Destination: &pubsublite.PubSubDestinationConfig{ | ||
| Topic: fmt.Sprintf("projects/%s/topics/%s", projectID, pubsubTopicID), | ||
| }, | ||
| }, | ||
| }, targetLocation) | ||
| if err != nil { | ||
| return fmt.Errorf("client.CreateSubscription got err: %v", err) | ||
| } | ||
| fmt.Fprintf(w, "Created export subscription: %s\n", sub.Name) | ||
| return nil | ||
| } | ||
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| // [END pubsublite_create_pubsub_export_subscription] |
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